MIL-DTL-38999 Series I connectors are designed for demanding environments, offering up to 128 contacts in a single insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors provide reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells, they come with plating options such as cadmium, nickel, and black anodized finishes. These connectors, compliant with military specifications, ensure secure and durable electrical connections for critical applications.